Dragonflies and damselflies are not pollinators. They are
predators. They would not be around your pond unless there was plenty to eat!
They are quite voracious, with the aquatic larvae eating the stuff in the pond
and the adults eating whatever emerges or flies by. They are death on mosquito
larvae, dayflying mosquitos, blackflies, gnats, midges and other flies. I have
even watched them pluck spiders from the center of their webs.
One goofy thing is that in Jamaica and a few other Caribbean
Islands (Julius and I discussed this together long ago) there are freshwater
crabs that live in the water collected in bromeliad axils. There are
damselflies that only lay their eggs in these little aquariums. They have an
elongated abdomen to reach way back in to the axils. If a crab is present, they
will grab the damselflies’ abdomen and reel it in. The crab will eat the
damselfly, and maybe cut it up into small pieces for its young crabs swimming
in the bromeliad tank. This still releases the damselfly’s eggs, which hatch,
and the young damsels then are predators on the crab larvae. Go figure.
Invertebrate Ecologist/ Taxonomist
1.530. 383.4798 (cell)
1307 "L" Street
Davis, CA 95616
Idaho Ÿ Bozeman, Montana Ÿ
Davis, California Ÿ Joplin, Missouri
Pennsylvania Ÿ London, Ontario
From: email@example.com [mailto:firstname.lastname@example.org] On
Behalf Of Taylor Holzer
Sent: Tuesday, January 20, 2009 1:52 PM
Subject: [Aroid-l] Pistia pollination
i think that dragonflies may play a part in pollinating
pistia, in my pond i had many dragonflies landing on tthe ones i had.
does anyone have a souce for pistia plants?
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